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95 results for “host–parasite relationships”
FIGURE 25 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 25. Radfordia (M.) pitymys sp. nov., male holotype. A, dorsal view; B, ventral view; C, seta m; D, genital cone. Scale bars: A, B = 100 µm; C, D = 50 µm.
FIGURE 27 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 27. Radfordia (M.) arvicolae Fain and Lukoschus, 1977, female. A, dorsal view; B, ventral view; C, seta m; D, vulvar region. Scale bars: A, B = 100 µm; C, D = 50 µm.
FIGURE 31 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 31. Radfordia (M.) arctica Fain and Lukoschus, 1977 from Dicrostonyx torquatus, female tritonymph. A, idiosoma in dorsal view; B, same in ventral view; C, leg IV in ventral view. Scale bars: A, B = 100 µm; C = 50 µm.
FIGURE 29 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 29. Radfordia (M.) arctica Fain and Lukoschus, 1977 from Dicrostonyx torquatus, female. A, dorsal view; B, ventral view; C, seta m; D, vulvar region. Scale bars: A, B = 100 µm; C, D = 50 µm.
FIGURE 22 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 22. Radfordia (M.) ladakensis Fain and Lukoschus, 1976, female. A, dorsal view; B, ventral view; C, seta m; D, vulvar region. Scale bars: A, B = 100 µm; C, D = 50 µm.
FIGURE 20 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 20. Radfordia (M.) golenishchevi sp. nov., male holotype. A, dorsal view; B, ventral view; C, seta m; D, genital cone. Scale bars: A, B = 100 µm; C, D = 50 µm.
FIGURE 64 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 64. Simplified phylogeny of the subfamily Arvicolinae. Derived from: Robovsky et al. 2008—general scheme; Lebedev et al. 2007—phylogeny of Myodini; Luo et al. 2004—phylogeny of Eothenomys.
FIGURE 63 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 63. Radfordia (M.) cricetulus Fain, 1973 from Cricetulus migratorius, female tritonymph. A, idiosoma in dorsal view; B, same in ventral view; C, tarsus IV in ventral view. Scale bars: A, B = 100 µm; C = 50 µm.
FIGURE 62 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 62. Radfordia (M.) cricetulus Fain, 1973 from Cricetulus migratorius, male. A, dorsal view; B, ventral view; C, genital cone. Scale bars: A, B = 100 µm; C = 50 µm.
FIGURE 61 in Mites of the subgenus Microtimyobia (Acariformes: Myobiidae: Radfordia) and their host-parasite relationships with cricetid rodents (Cricetidae) 2954
FIGURE 61. Radfordia (M.) cricetulus Fain, 1973 from Cricetulus migratorius, female. A, dorsal view; B, ventral view; C, seta m. Scale bars: A, B = 100 µm; C = 50 µm.
FIG. 2 in Host-parasite relationships between a Malagasy fruit bat (Pteropodidae) and associated bat fly (Diptera: Nycteribiidae): seasonal variation of host body condition and the possible impact of parasite abundance
FIG. 2. Body Condition Index (BCI) of R. madagascariensis in the Grotte des Chauves-souris, Parc National d'Ankarana, based on five different field sessions and separated into the different age and sex classes. AF = adult female, AM = adult male, NF = neonate female, NM = neonate male, SAF = sub-adult female, SAM = sub-adult male
FIG. 1 in Host-parasite relationships between a Malagasy fruit bat (Pteropodidae) and associated bat fly (Diptera: Nycteribiidae): seasonal variation of host body condition and the possible impact of parasite abundance
FIG. 1. Location map of the study site, Grotte des Chauves-souris, in the Parc National d'Ankarana, northern Madagascar
Figure 1 in Helminths of freshwater turtles in Northeastern Brazil: parasite-host-environment relationships
Figure 1. Locations where the turtles Phrynops geoffroanus and Mesoclemmys tuberculata were collected from Caatinga and Atlantic Forest, Northeastern Brazil: (1) Reserva Biológica de Santa Isabel (municipality of Pirambú); (2) Refúgio de Vida Silvestre Mata do Junco (municipality of Capela); (3) Parque Nacional Serra de Itabaiana (municipality of Areia Branca); (4) Monumento Natural do Rio São Francisco (municipality of Poço Redondo); (5) Monumento Natural Grota do Angico (municipality of Poço Redondo); and (6) Basin of Real River (municipality of Tobias Barreto).
The overlooked complexity of avian brood parasite–host relationships
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Data from: Biogeography of avian blood parasites (Leucocytozoon spp.) in two resident hosts across Europe: phylogeographic structuring or the abundance-occupancy relationship?
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Urbanization and translocation disrupt the relationship between host density and parasite abundance
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Data from: An invasive species reverses the roles in a host-parasite relationship between bitterling fish and unionid mussels
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Data from: The relationship between parasite fitness and host condition in an insect - virus system
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Data from: Evolutionary relationships, cospeciation, and host switching in avian malaria parasites
We used phylogenetic analyses of cytochrome b sequences of malaria parasites and their avian hosts to assess the coevolutionary relationships between host and parasite lineages. Many lineages of avian malaria parasites have broad host distributions, which tend to obscure cospeciation events. The hosts of a single parasite or of closely related parasites were nonetheless most frequently recovered from members of the same host taxonomic family, more so than expected by chance. However, global assessments of the relationship between parasite and host phylogenetic trees, using Component and ParaFit, failed to detect significant cospeciation. The event-based approach employed by TreeFitter revealed significant cospeciation and duplication with certain cost assignments for these events, but host switching was consistently more prominent in matching the parasite tree to the host tree. The absence of a global cospeciation signal despite conservative host distribution most likely reflects relatively frequent acquisition of new hosts by individual parasite lineages. Understanding these processes will require a more refined species concept for malaria parasites and more extensive sampling of parasite distributions across hosts. If parasites can disperse between allopatric host populations through alternative hosts, cospeciation may not have a strong influence on the architecture of host–parasite relationships. Rather, parasite speciation may happen more often in conjunction with the acquisition of new hosts followed by divergent selection between host lineages in sympatry. Detailed studies of the phylogeographic distributions of hosts and parasites are needed to characterize these events.
Data from: Effects of aphid parasitism on host plant fitness in an aphid-host relationship.
Aphids are serious agricultural insect pests which exploit the phloem sap of host plants and thus transmit pathogens to their hosts. However, the degree to which aphid parsitism affects the fitness of the host plants is not well understood. The aphid, Macrosiphoniella yomogicola, parasitizes the mugwort Artemisia montana in Japan. During summer most mugworts carry aphids, but most aphid colonies die out after the budding of A. montana inflorescences in late summer. A few aphid colonies survive to late autumn, at which point sexuparae appear to later lay overwintering eggs after copulation. The death of the aphid colonies seems to cause by biochemical changes in the phloem sap in the host plant coincident with the budding of inflorescences. The surviving aphid colonies may suppress the budding of inflorescences to allow persistence of their genetic line into the following year. Our investigations demonstrate that aphid parasitism did not affect host plant growth, but that it did significantly decrease the number of inflorescences and the average weight of floral buds. Our results indicate that aphid parasitism has a strong negative effect on the fitness of host plants. The manner in which the aphids suppress floral budding in their hosts is worth examining from the perspective of the evolution of aphid-plant interactions.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.